21503913

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1873}}^1$

素因数の和:2008

約数の個数: 16

約数和(自身を含む): 29684160

約数和(自身を除く): 8180247

約数列:

[1, 3, 43, 89, 129, 267, 1873, 3827, 5619, 11481, 80539, 166697, 241617, 500091, 7167971, 21503913]

約数ペア:

[(1, 21503913), (3, 7167971), (43, 500091), (89, 241617), (129, 166697), (267, 80539), (1873, 11481), (3827, 5619)]